This is really not too hard to accomplish. You will need to have access to a welder and/or metal machine lathe. Maybe an 8mm x 1.25mm die or an 8mm x1.25 x 1-1/2" bolt. (see below)
First you will need to cut the wires going to the signals. Make sure you cut them in a place that is fairly easy to solder back together later! Next take a 12mm wrench and remove the nuts holding the signals onto the fenders. You will end up with this...
Next you need to remove the Phillips head screws from behind the signals. This separates the rubber spacer from the chrome signal.
Now you need to cut the rubber away from the metal pieces (a box cutter is good for this, as is a hack saw).
Look at the picture below... you will need to save a small piece of rubber to go back into the signal after you are done!
There are two separate pieces in there. After you get them out they look like this...
After you have all four pieces separated, you will need to "break" off the tubular piece from the threaded bolt, and cut the "angle" bracket into two pieces. Cut the bracket at the 90° bend.
Next you have two options:
After this is done you will need to get the "tabs" welded to the "bolts"
Next you need to sand the welds down until they look like this.
Be careful not to remove too much weld.. this will make them weak and may cause them to break easily).
Now you need to run the threads further down the bolt. You will need an 8mm X 1.25mm die for this. Be sure not to try to cut the threads where the weld is, this will ruin the die.
That's it! Now just replace the rubber tab that you removed earlier into the chrome signal housing and insert the new "bolts". Replace the Phillips screws and you're done!
